20739968210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1987}}^1\times {\mathrm{4723}}^1$

素因数の和:6747

約数の個数: 64

約数和(自身を含む): 42598991232

約数和(自身を除く): 21859023022

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 1987, 2210, 3974, 4723, 9446, 9935, 19870, 23615, 25831, 33779, 47230, 51662, 61399, 67558, 80291, 122798, 129155, 160582, 168895, 258310, 306995, 337790, 401455, 439127, 613990, 802910, 878254, 1043783, 2087566, 2195635, 4391270, 5218915, 9384601, 10437830, 18769202, 46923005, 93846010, 121999813, 159538217, 243999626, 319076434, 609999065, 797691085, 1219998130, 1595382170, 2073996821, 4147993642, 10369984105, 20739968210]

約数ペア:

[(1, 20739968210), (2, 10369984105), (5, 4147993642), (10, 2073996821), (13, 1595382170), (17, 1219998130), (26, 797691085), (34, 609999065), (65, 319076434), (85, 243999626), (130, 159538217), (170, 121999813), (221, 93846010), (442, 46923005), (1105, 18769202), (1987, 10437830), (2210, 9384601), (3974, 5218915), (4723, 4391270), (9446, 2195635), (9935, 2087566), (19870, 1043783), (23615, 878254), (25831, 802910), (33779, 613990), (47230, 439127), (51662, 401455), (61399, 337790), (67558, 306995), (80291, 258310), (122798, 168895), (129155, 160582)]